Unable to adjust brightness Lenovo Tab3

Question

My brand new Lenovo Tab3 doesn't respond to screen brightness slider at all. Nor does the automatic adjustment work when ambient light changes. Any similar experiences or maybe solutions?


— Sami | Sources

Answer

Solved.

Turns out you have to accept the Lenovo customer-whatever and register when first installing the tab to get full functionality. The device is usable without registration, but there seem to be a few functions missing.


— Sami | Sources

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